We will be undertaking a failover test of our intersite connectivity between Enfield and London Docklands. As you may be aware, we have two connections, one primary and one secondary. This test will see all connections fail over from the primary line to the secondary line. During this time we expect to see some services time out for a minute or two while the network re-routes itself. There should be no machine downtime but the services may be inaccessible for a short period from the outside world and internally.
We will then be testing that the network has re-established correctly using the secondary line. At 11pm we will then be reconnecting our faster primary line which will see connections fail back again incurring the same minute or two of service downtime while it re-establishes.
We have fully tested the secondary line already and expect no issues other than those expected above. Rollback will be to re-establish the primary line quicker in the event of no recovery to the secondary line. We will be doing this in conjunction with our onsite engineers.
As I'm sure you appreciate, testing our Disaster Recovery scenarios is a key part of being able to provide you with the resilient service you have come to expect from us. If you have any queries please send a ticket in to email@example.com
in the first instance.
Customers on AWS or Azure or third party hosting environments should experience no issues unless they try to connect to our hosted services during this time.
Digital Craftsmen Ltd.